Puas qhia ib txwm muaj qhov tshwj xeeb?

Cov txheej txheem:

Puas qhia ib txwm muaj qhov tshwj xeeb?
Puas qhia ib txwm muaj qhov tshwj xeeb?

Video: Puas qhia ib txwm muaj qhov tshwj xeeb?

Video: Puas qhia ib txwm muaj qhov tshwj xeeb?
Video: HLUB KOJ IB SIM - MIV FEE. NKAUJ TAWM TSHIAB 2022 (MUSIC VIDEO OFFICIAL) HMONG LOVE SONG 2022 2024, Lub peb hlis ntuj
Anonim

Yog, a GUID yuav tsum yog ib txwm tsis muaj. Nws yog nyob ntawm ob qho tib si kho vajtse thiab lub sijhawm, ntxiv rau ob peb yam ntxiv kom paub tseeb tias nws txawv.

Puas tau txais tib GUID?

Txoj kev xav, tsis yog, lawv tsis txawv. Yuav ua li cas los tsim ib qho kev qhia zoo ib yam dhau mus.

Dab tsi yog qhov txawv ntawm ob tus GUIDs zoo ib yam?

Qhov uas yuav tau txais ob daim ntawv qhia zoo ib yam yog astronomically slimtxawm tias koj tab tom tsim cov lus qhia sai li sai tau. (Tsim, hais, ntau txhiab tus taw qhia ib ob rau lub hom phiaj ntawm kev nrhiav qhov sib npaug.)

Qhov txawv ntawm GUID rov hais dua yog dab tsi?

GUID yog dab tsi? 128-ntsis yog qhov loj txaus thiab tiam algorithm yog qhov tshwj xeeb txaus tias yog 1, 000, 000, 000 GUIDs ib ob tau tsim rau 1 xyoo qhov tshwm sim ntawm qhov sib npaug tsuas yog50%. Los yog yog tias txhua tus tib neeg hauv ntiaj teb tsim 600, 000, 000 GUIDs tsuas muaj 50% qhov tshwm sim ntawm qhov sib npaug.

Puas yog cov GUIDs ib txwm ntev?

3 Teb. Yog, qhov ntev yog tsauthiab yog, tus lej nruab nrab yog ib txwm 4 thaum koj siv tus qauv tostring hom. Qee cov khoom hauv GUID (paub tias UUID yuav luag txhua qhov chaw uas tsis yog qhov rais) raug kho kom qhia cov khoom xws li version thiab lwm yam.. Tus 4 yog tus lej version.

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